3 years ago

How many hours are in a day?

Mathematics

1 answer:

allochka39001 [22]3 years ago

7 0

24 hours are in a day.

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Leia is setting up 417 417417 toy cars. Each car needs 3 33 batteries to drive. How many batteries does Leia need for her cars?

Brut [27]

Answer: 1251

Step-by-step explanation:

Given

Leia is setting up 417 toy cars

Each car needs 3 batteries to drive

So, 417 cars need

$\Rightarrow 417\times 3\\\Rightarrow 1251\ \text{batteries}$

Thus, 1251 batteries is needed.

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3 years ago

Which steps show how to use the distributive property to evaluate. 7•32

Alexandra [31]

Answer:

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Step-by-step explanation:

nd the star is the multiplacations sign bcz i dont have the dot mk.

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3 years ago

Does this graph represent a function? <br>A=Yes <br>B=No

RSB [31]

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Step-by-step explanation:

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3 years ago

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Digiron [165]

Answer:

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Step-by-step explanation:

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2 years ago

the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas

katovenus [111]

Answer:

0.67 cm/s

Step-by-step explanation:

The area of a square is given by :

$A=x^2$ ....(1)

Where

x is the side of a square

$\dfrac{dA}{dt}=12\ cm^2/s$

Differentiating equation (1) wrt t.

$\dfrac{dA}{dt}=2x\times \dfrac{dx}{dt}$

When A = 81cm², the side of the square, x = 9 cm

Put all the values,

$12=2\times 9\times \dfrac{dx}{dt}\\\\\dfrac{dx}{dt}=\dfrac{2}{3}\\\\\dfrac{dx}{dt}=0.67\ cm/s$

So, the length of the side of a square is changing at the rate of 0.67 cm/s.

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2 years ago